An inclined roadway roof water spray protection measurement equipment and method

By setting up a sub-area water drainage collection system in the inclined tunnel, real-time monitoring and alarm, the problem of water drainage on the roof of the inclined tunnel is solved, ensuring the smooth progress of safe production.

CN112761725BActive Publication Date: 2025-08-05HUZHOU VOCATIONAL TECH COLLEGE
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Patent Information

Application Number
CN202011585931.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-12-28
Publication Date
2025-08-05
Estimated Expiration
2040-12-28

AI Technical Summary

Technical Problem

The prior art cannot effectively solve the problem of water draining on the roof of the inclined tunnel, resulting in safety hazards, and the treatment method of horizontal tunnels cannot directly meet the needs of inclined tunnels.

Method used

A sub-regional water drainage collection system is adopted, including a water collecting plate, support mechanism, flow port, water tank, temporary alarm device, monitoring device and control device, to monitor and display the water drainage volume in real time, and issue an alarm when the critical value is reached.

Benefits of technology

It realizes sub-regional monitoring and real-time alarm of water spraying on the roof of the inclined tunnel, ensures the safe and orderly progress of production, and solves the actual needs of water spraying on the roof of the inclined tunnel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the technical field of safety protection in mining engineering construction, and particularly to a measuring equipment and method for protecting against roof water gushing in inclined roadways, which includes a water collecting plate arranged below the inclined roadway, two sets of support mechanisms arranged between the lower part of the water collecting plate and the bottom plate of the inclined roadway, a water outlet opened in the middle below the water collecting plate, a water tank arranged directly below the water outlet, a danger warning device, a monitoring device, and a control device. The present invention provides a method for collecting water gushing in sub-regions, which can display the water gushing volume in sub-regions and the whole roadway in real time and send out danger warning signals, taking into account both the local and overall parts of the inclined roadway, and well solving the problem that the current measuring equipment for protecting against roof water gushing in inclined roadways cannot meet the actual engineering requirements, which is beneficial to ensuring the safe and orderly progress of production.
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Description

Technical Field

[0001] The present invention relates to the technical field of safety protection in mining engineering construction, and particularly to a measurement equipment and method for protecting against roof water gushing in inclined roadways. Background Art

[0002] During the construction of underground mining engineering, affected by geological conditions, roof water gushing may occur in some mine roadways. Roof water gushing is likely to cause a decrease in the water absorption strength of the floor rock, and it is also likely to make the ground slippery. Especially in inclined roadways, the roof water gushing flows along the inclined direction of the floor, making it easier to induce potential safety hazards. Currently, there are relatively many studies on roof water gushing in horizontal roadways, and most of the measures for dealing with roof water gushing in horizontal roadways are to collect the water gushing using water collectors and then lift the water to the ground. Although the methods for dealing with roof water gushing in horizontal roadways provide a reference for roof water gushing in inclined roadways, the methods for dealing with roof water gushing in horizontal roadways cannot directly meet the requirements for dealing with roof water gushing in inclined roadways. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems, provide a water collection by sub-region, which can display the water gushing volume in real time by sub-region and for the whole roadway and issue a danger warning signal, taking into account both the local and overall situations of the inclined roadway, and well solve the problem that the current measurement equipment for protecting against roof water gushing in inclined roadways cannot meet the actual engineering requirements, which is beneficial to ensuring the safe and orderly progress of production.

[0004] To solve the above problems, the technical solution adopted by the present invention is:

[0005] A measurement equipment for protecting against roof water gushing in an inclined roadway includes a water collection plate arranged below the inclined roadway, two groups of support mechanisms arranged between the lower part of the water collection plate and the floor of the inclined roadway, a water flow port opened in the middle below the water collection plate, a water tank arranged directly below the water flow port, a danger warning device, a monitoring device, and a control device. The water tank is fixedly installed on the floor of the inclined roadway through a column. The width of the water collection plate is equal to the roadway width of the inclined roadway. The water collection plate is parallel to the roof of the inclined roadway. A hollow column is arranged inside the water tank. Four water inlets are respectively opened at the four sides of the bottom of the hollow column, and four ventilation holes are respectively opened at the four sides of the top of the hollow column. An opaque hollow plastic cube block is placed inside the hollow column. The four sides of the opaque hollow plastic cube block are closely attached to the corresponding inner walls of the hollow column. A laser emission source and a photosensitive diode are installed at the same height at the top of the hollow column. A water outlet pipe is arranged below the water tank, and a control valve is installed on the water outlet pipe. The control device is used to control the opening and closing of the control valve.

[0006] The described support mechanism includes three upper brackets, three lower brackets, and an upper and lower bracket combination block disposed between the upper and lower brackets. The lower ends of the three upper brackets and the upper ends of the three lower brackets are connected by the upper and lower bracket combination block.

[0007] The described hollow column is made of transparent colorless glass.

[0008] The distance between the described laser emission source and the photosensitive diode from the top of the hollow column is less than the height of the hollow plastic cube block.

[0009] The outer edge heights on the left and right sides and the lower part of the water collecting plate are higher than the inner edge.

[0010] A method for measuring the protection of the inclined roadway roof from water spray of an inclined roadway roof water spray protection measurement equipment includes the following steps:

[0011] 1) Divide the entire inclined roadway into n regions along the length direction of the inclined roadway. The lengths of each region along the inclined direction are z1, ……, z i , ……, z n ;

[0012] 2) Set water collecting plates under each region of the inclined roadway. The lengths of the water collecting plates are Z1, ……, Zi, ……, Zn respectively. Below the i-th region, the length of the water collecting plate is Zi. The width of the water collecting plate is the same as the roadway width of the inclined roadway, both being L3;

[0013] 3) A water tank is provided directly below the water outlet of each water collecting plate. Taking the i-th region as an example, the

[0014] height of the water tank is H5. The bottom of the water tank is a square with side length L2×L2. The height of the hollow column is H1. The bottom of the hollow column is a square with side length L1×L1. The height of the plastic cube block is H2. The distance between the laser emission source and the photosensitive diode from the top of the hollow column is H4, and H4 < H2;

[0015] 4) Taking the i-th region as an example, when the water level in the water tank is low and the hollow plastic cube block has not reached the height of H3, the light emitted by the laser emission source can irradiate the photosensitive diode. When the water level in the water tank gradually rises, the hollow plastic cube block also rises accordingly. When the hollow plastic cube block reaches the height of H3, the hollow plastic cube block blocks the light irradiated by the laser emission source to the photosensitive diode. At this time, the water level height in the water tank is H3 - H2. Taking the i-th region as an example, the water volume in the water tank is:

[0016] Q i =(H3 - H2)·L2·L2

[0017] 5) When the water level in the water tank is greater than H3 - H2, the photosensitive diode is not irradiated by laser and is in the off state. The potential of the photosensitive diode circuit changes from low potential to high potential. This potential change is transmitted to the control device. After being judged by the control device, the drainage times of the water tank increase by 1. At the same time, the control valve is controlled to open the water outlet pipe to drain water. When the water level in the water tank is less than H3 - H2, the photosensitive diode is irradiated by laser and is in the conducting state, and the potential of the photosensitive diode circuit is low potential. After being judged by the controller and after time t d the water outlet pipe is closed, and time t d is sufficient to ensure that the water in the water tank is fully drained;

[0018] 6) The monitoring device records the drainage volume and time of each area. Taking the i-th area as an example, the monitoring device records the number of water tank drainage times in the i-th area as N i , and this period of time is t i , and the water volume within time t i is obtained as:

[0019] Q it = N i ·Q i

[0020] The roof area of the i-th area is

[0021] S i = Z i ·L3

[0022] The size of the water spraying flow rate per unit time on the roof of the i-th area is:

[0023]

[0024] Set the risk warning value for the i-th area as When , the risk warning device issues an alarm to notify the staff. At the same time, the information of all the first area to the n-th area is transmitted to the monitoring device again. The monitoring device summarizes and processes the information of each area, obtains the size of the roof water spraying value of the whole roadway, and displays it in real time, enabling the staff to grasp the roof water spraying situation of the whole roadway and each area through the monitoring device in real time.

[0025] The gain effect of the present invention is:

[0026] The monitoring device of the present invention records the drainage volume and time of each area. Taking the i-th area as an example, the monitoring device records the number of water tank drainage times in the i-th area as N i , and this period of time is t i , and the water volume within time t i is obtained, and the size of the water spraying flow rate per unit time on the roof of the i-th area is calculated. Set the risk warning value for the i-th area as When occurs, the in-danger alarm device issues an alarm to notify the staff. At the same time, the information of all the first area to the nth area is transmitted to the monitoring device. The monitoring device summarizes and processes the information of each area, obtains the magnitude of the roof water inflow of the overall roadway, and displays it in real time, enabling the staff to grasp the roof water inflow situation of the entire roadway and each area through the monitoring device in real time. The present invention provides a water inflow collection by area, which can display the water inflow by area and the water inflow of the entire roadway in real time and issue an in-danger alarm signal, taking into account both the local and the whole of the inclined roadway, and well solving the problem that the current roof water inflow protection measurement equipment for inclined roadways cannot meet the actual engineering requirements, which is beneficial to ensuring the safe and orderly progress of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural view of the inclined roadway of the present invention.

[0028] Figure 2 It is a schematic structural view of the water collecting plate of the present invention.

[0029] Figure 3 It is one of the schematic structural views of the water tank of the present invention.

[0030] Figure 4 It is the circuit diagram of the laser emission source of the present invention.

[0031] Figure 5 It is the circuit diagram of the photosensitive diode of the present invention.

[0032] Figure 6 It is the schematic view of the control device of the present invention.

[0033] Figure 7 It is the other schematic structural view of the water tank of the present invention.

[0034] Figure 8 It is the schematic view of the in-danger alarm device for the area of the present invention.

[0035] Figure 9 It is the schematic view of the overall in-danger alarm device of the present invention.

[0036] Figure 10 It is the schematic structural view of the roof water inflow distribution of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will make a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.

[0038] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、Figure 6 , Figure 7 , Figure 8 and Figure 9 , in the figure: No. 1 is the roof plate, No. 2 is the bottom plate, No. 3 is the water collecting plate, No. 4 is the water tank, No. 5 is the hollow column, No. 6 is the hollow plastic cube block, No. 7 is the water outlet, No. 8 is the water outlet pipe, No. 9 is the control valve, No. 10 is the upper bracket, No. 11 is the lower bracket, No. 12 is the upper and lower bracket combination block, No. 12 is the laser emission source, No. 13 is the photodiode, No. 14 is the digital-to-analog signal converter, No. 15 is the controller, No. 16 is the display, No. 17 is the overall controller, No. 18 is the overall display, No. 19 is the overall digital-to-analog signal converter, No. 20 is the resistor one, No. 21 is the light-emitting diode one, No. 22 is the buzzer one, No. 23 is the resistor two, No. 24 is the light-emitting diode two, and No. 25 is the buzzer two.

[0039] An inclined roadway roof water spray protection measurement equipment of the present invention includes a water collecting plate 3 arranged below the inclined roadway, two sets of support mechanisms arranged between the lower part of the water collecting plate 3 and the bottom plate 2 of the inclined roadway, a water outlet opened in the middle below the water collecting plate, a water tank 4 arranged directly below the water outlet, a danger warning device, a monitoring device, and a control device. The water tank 4 is fixedly installed on the bottom plate 2 of the inclined roadway through columns. The width of the water collecting plate 3 is equal to the roadway width of the inclined roadway. The water collecting plate 3 is parallel to the roof 1 of the inclined roadway. A hollow column 5 is arranged inside the water tank 4. An inlet is respectively opened at the four sides of the bottom of the hollow column 5. A ventilation hole is respectively opened at the four sides of the top of the hollow column 5. An opaque hollow plastic cube block 6 is placed inside the hollow column 5. The four sides of the opaque hollow plastic cube block 6 are closely attached to the corresponding inner walls of the hollow column 5. A laser emission source 12 and a photodiode 13 are installed at the same height at the top end of the hollow column 5. A water outlet pipe 8 is arranged below the water tank 4. A control valve 9 is installed on the water outlet pipe 8. The control device is used to control the opening and closing of the control valve 9.

[0040] The support mechanism includes three upper brackets 10, three lower brackets 11, and an upper and lower bracket combination block 12 arranged between the upper bracket 10 and the lower bracket 11. The lower ends of the three upper brackets 10 and the upper ends of the three lower brackets 11 are connected through the upper and lower bracket combination block 12.

[0041] The hollow column 5 is made of transparent colorless glass.

[0042] The distance between the laser emission source 12 and the photodiode 13 from the top end of the hollow column 5 is less than the height of the hollow plastic cube block 6.

[0043] The outer edge heights of the left and right sides and the lower part of the water collecting plate 3 are higher than the inner edge heights.

[0044] Measuring method for protecting against water spray on the roof of an inclined roadway: The trend of the inclined roadway forms an angle of θ with the horizontal line. Among them, the roof 1 of the inclined roadway is the part where water spray occurs. The total length of the inclined roadway along the inclined direction is Z for the floor 2 of the inclined roadway. The whole inclined roadway is divided into n regions, and the lengths of each region along the inclined direction are z1, ……, z i , ……, z n, A water collecting plate is arranged under each region of the inclined roadway. The lengths of the water collecting plates are Z1, ……, Zi, ……, Zn respectively. Under the i-th region, the length of the water collecting plate is Zi. The width of the water collecting plate is the same as the roadway width of the inclined roadway, both being L3. Measuring equipment for protecting against water spray on the roof of the inclined roadway is correspondingly arranged under each region. The water collecting plate 3 is located under the i-th region of the corresponding inclined roadway, and the length of the water collecting plate 3 is also Z i . The width of the water collecting plate 3 is the same as the roadway width of the inclined roadway, both being L3. The upper support 10 has three contact points with the water collecting plate 3 to improve the supporting effect of the supporting mechanism on the water collecting plate 3, so that the water collecting plate 3 inclines along the inclined direction of the inclined roadway. The outer edge heights on the left and right sides and at the bottom of the water collecting plate 3 are higher than the inner edge to prevent the overflow of the collected water spray.

[0045] The height of the water tank 4 is H5, and the bottom of the water tank 4 is a square with side length L2×L2. A hollow column 5 is arranged inside the water tank 4. The hollow column 5 is made of transparent colorless glass. The height of the hollow column 5 is H1, and the bottom of the hollow column 5 is a square with side length L1×L1. The bottom ○2 of the hollow column 5 is installed at the bottom of the water tank 4. An inlet is respectively arranged on each of the four sides at the bottom of the hollow column 5. Through these four inlets, the water in the water tank 4 can enter the hollow column 5. A vent hole is respectively arranged on each of the four sides at the top of the hollow column 5. Through these four vent holes, the uppermost part of the hollow column 5 is always in communication with the external environmental air. An opaque hollow plastic cube block 6 is placed inside the hollow column 5. The height of the hollow plastic cube block 6 is H2. The four sides of the hollow plastic cube block 6 in the left-right, front-back directions are closely attached to the inner wall of the hollow column 5. The water depth height in the water tank 4 is the same as the bottom height of the plastic cube block 6. Therefore, when the water depth height in the water tank 4 is H3 - H2, the water depth height in the hollow column 5 is also H3 - H2. At this time, the inside of the hollow column 5 from bottom to top is respectively water body, hollow plastic cube block 6, and air.

[0046] The distance between the laser emission source 12 and the photosensitive diode 13 from the top of the hollow column 6 is H4, and H4 < H2. When the water level in the water tank 4 is relatively low and the hollow plastic cube 6 has not reached the height of H3, the light emitted by the laser emission source 12 can irradiate the photosensitive diode 13. When the water level in the water tank 4 gradually rises, the hollow plastic cube 6 also rises accordingly. When the hollow plastic cube 6 reaches the height of H3, the hollow plastic cube 6 blocks the light from the laser emission source 12 irradiating the photosensitive diode 13. At this time, the water level height in the water tank 4 is H3 - H2, and the water volume in the water tank 4 is Q i =(H3 - H2)·L2·L2.

[0047] Figure 4 This is the circuit diagram of the laser emission source. The circuit of the laser emission source consists of a power supply E1, a switch K1, and a laser emission source 12. C2 and C1 are the positive and negative connection positions of the laser emission source 12. When the inclined roadway roof water spray protection measurement equipment is installed and put into operation, the switch K1 needs to be closed, and the laser emission source 12 is always in the working state and emits laser light.

[0048] Figure 5 This is the circuit diagram of the photosensitive diode. The photosensitive diode circuit includes a power supply E2, a switch K2, a photosensitive diode 13, a digital-to-analog signal converter 14, a controller 15, and a display 16. When the inclined roadway roof water spray protection measurement equipment is installed and put into operation, the switch K2 needs to be closed. D1 and D2 are the positive and negative connection positions of the photosensitive diode 13. When the photosensitive diode 13 is always under laser irradiation, the circuit is conducting, and D1 is at a low potential; when the photosensitive diode 13 is not irradiated by laser, the circuit is disconnected, and D1 is at a high potential. The potential situation of D1 is transmitted to the digital-to-analog signal converter 14 in real time, and after being processed by the controller 15, it is transmitted to the control device and the display 16. The display 16 displays the current water spray volume and time in real time.

[0049] Figure 6 This is the schematic diagram of the control device. The controllers in n sub-regions are connected to the overall device through wiring I1, I2, ……, I i , ……, In. The overall control device includes an overall controller 17, an overall display 18, and an overall digital-to-analog signal converter 19. The overall display 18 displays the current water spray volume and time in real time. The overall controller 17 is connected to the whole of the entire roadway through the K6 wiring after passing through the overall digital-to-analog signal converter 19.

[0050] An outlet pipe 8 is installed at the lower part of the water tank 4. The outlet pipe 8 is provided with a control valve 9. The control valve 9 is connected to a rotary motor. When the rotary motor rotates forward, the control valve 9 closes the outlet pipe 8. When the rotary motor rotates in the reverse direction, the control valve 9 opens the outlet pipe 8. The control valve 9 can quickly and effectively shut off and open the outlet pipe 8 to ensure the normal operation of the water tank 4. The rotary motor is connected through Figure 7The right - hand circuit is powered. In the circuit, the positive and negative poles of power supplies E3 and E4 are installed in opposite directions. Whether power supply E3 is connected is controlled by switch K3, and whether power supply E4 is connected is controlled by switch K4. The opening and closing states of switches K3 and K4 are controlled by the controller 15 in the corresponding area. After the control valve 9 is opened until it is closed again, there is a time t d delay to ensure that the water in the water tank 4 is fully drained.

[0051] The risk - warning device in each area includes power supply E 5、 resistor 1 - 20, light - emitting diode 1 - 21 and buzzer 1 - 22. Since the general mine environment has insufficient light and other conditions are relatively poor compared with the open - ground environment, a combined light - and - sound alarm method is adopted.

[0052] The overall risk - warning device includes power supply E6, resistor 2 - 23, light - emitting diode 2 - 24 and buzzer 2 - 25.

[0053] Taking the i - th area as an example, when the water level in the water tank is low and the hollow plastic cube does not reach the height H3, the light emitted by the laser emission source can irradiate the photodiode. When the water level in the water tank gradually rises, the hollow plastic cube also rises. When the hollow plastic cube reaches the height H3, the hollow plastic cube blocks the light from the laser emission source irradiating the photodiode. At this time, the water - level height in the water tank is H3 - H2. Taking the i - th area as an example, the water volume in the water tank is:

[0054] Q i =(H3 - H2)·L2·L2

[0055] When the water level in the water tank is greater than H3 - H2, the photodiode is not irradiated by laser and is in the off state. The potential of the circuit of the photodiode changes from low potential to high potential. This potential change is transmitted to the control device. After being judged by the control device, the number of water - tank drainage times increases by 1, and at the same time, the control valve is controlled to open the water outlet pipe to drain water. When the water level in the water tank is less than H3 - H2, the photodiode is irradiated by laser and is in the on state. The potential of the circuit of the photodiode is low potential. After being judged by the controller and after time t d the water outlet pipe is closed. Time t d is sufficient to ensure that the water in the water tank is fully drained;

[0056] The monitoring device records the drainage volume and time of each area. Taking the i - th area as an example, the monitoring device records the number of water - tank drainage times in the i - th area as N i , this period of time is t i , and the water volume within time t i is obtained as:

[0057] Q it =Ni ·Q i

[0058] The roof area of the ith region is

[0059] S i = Z i ·L3

[0060] The water spray flow rate per unit time of the roof in the ith region is:

[0061]

[0062] Set the danger warning value of the ith region as When occurs, the danger warning device issues an alarm to notify the staff. At the same time, the information of all regions from the 1st region to the nth region is transmitted to the monitoring device. The monitoring device summarizes and processes the information of each region, obtains the magnitude of the roof water spray value of the overall roadway, and displays it in real time, enabling the staff to grasp the roof water spray situation of the entire roadway and each region in real time through the monitoring device.

[0063] As Figure 10 shown, assume that the water spray distribution function is f(x, y, t), and the volume of the rainwater is ∫∫∫f(x, y, t)dxdydt.

[0064] According to Bernoulli's equation, the water flow velocity at the lower outlet of the water tank can be obtained as

[0065] According to the geometric relationship, it can be obtained that Figure 10 the volume of water in the shaded area in

[0066]

[0067] Under ideal conditions, there is the following relationship

[0068] Q 阴影 = ∫∫∫(x, y, t)dxdydt

[0069] That is

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for measuring water spray protection for the roof of an inclined tunnel, comprising a water collection plate disposed below the inclined tunnel, two sets of support mechanisms disposed below the water collection plate and between the bottom plate of the inclined tunnel, a water outlet opened in the middle below the water collection plate, a water tank disposed directly below the water outlet, an emergency alarm device, a monitoring device, and a control device. The water tank is fixedly mounted on the bottom plate of the inclined tunnel via a column. The width of the water collection plate is equal to the width of the inclined tunnel, and the water collection plate is parallel to the roof plate of the inclined tunnel. The water tank is provided with a hollow column, the four sides of the bottom of the hollow column are respectively provided with a water inlet, the four sides of the top of the hollow column are respectively provided with an air vent, an opaque hollow plastic cube is placed inside the hollow column, the four sides of the opaque hollow plastic cube are in close contact with the corresponding inner walls of the hollow column, a laser emission source and a photodiode are installed at the same height of the hollow column, an outlet pipe is provided below the water tank, a control valve is installed on the outlet pipe, and the control device controls the switch of the control valve, characterized in that: The following steps are involved: 1) Divide the entire inclined roadway into n areas along the length direction of the inclined roadway. The lengths of each area along the inclined direction are z1, ..., z i ,……,z n ; 2) A water collecting plate is set under each area of the inclined roadway. The lengths of the water collecting plates are Z1, ..., Zi, ..., Zn respectively. Under the i-th area, the length of the water collecting plate is Zi, and the width of the water collecting plate is consistent with the width of the inclined roadway, which is L3. 3) A water tank is installed directly below the water outlet of each water collecting plate. Taking the i-th area as an example, the height of the water tank is H5, the bottom of the water tank is a square of L2×L2, the height of the hollow column is H1, the bottom of the hollow column is a square of L1×L1, the height of the plastic cube is H2, and the distance between the laser emission source and the photodiode and the top of the hollow column is H4, and H4<H2; 4) Taking the i-th region as an example, when the water level in the water tank is low and the hollow plastic cube has not reached the height H3, the light emitted by the laser emission source can illuminate the photodiode. As the water level in the water tank gradually rises, the hollow plastic cube also rises. When the hollow plastic cube reaches the height H3, the hollow plastic cube blocks the light from the laser emission source to the photodiode. At this time, the water level in the water tank is H3-H2. Taking the i-th region as an example, the water volume in the water tank is: <h2 style=";text-align:left;direction:ltr">Q<h2 style=";text-align:left;direction:ltr"> i <h2 style=";text-align:left;direction:ltr"> (H3-H2) L2 L2 5) When the water level in the water tank is greater than H3-H2, the photosensitive diode is not irradiated by the laser, and the photosensitive diode is in the off state. The potential of the circuit of the photosensitive diode changes from low potential to high potential. This potential change is transmitted to the control device. After judgment by the control device, the water tank drainage times are increased by 1, and the control valve is controlled to open the outlet pipe to drain water. When the water level in the water tank is less than H3-H2, the photosensitive diode is irradiated by the laser, the photosensitive diode is in the on state, and the potential of the circuit of the photosensitive diode is low potential. After judgment by the controller and time td, the outlet pipe is closed. Time td is sufficient to ensure that the water in the water tank is fully discharged; 6) The monitoring device records the drainage volume and time of each area. Taking the i-th area as an example, the monitoring device records the number of times the water tank in the i-th area is drained as N i , this time is t i , we get t i The amount of water in this time is: Q it =N i ·Q i The top plate area of region i is S i =Z i ·L3 The water flow rate per unit time of the top plate of area i is: Set the danger alarm value of area i to When the emergency alarm device sounds an alarm to notify the staff, at the same time, all the information from the 1st area to the nth area is transmitted to the monitoring device, which summarizes and processes the information of each area, obtains the roof water spraying value of the entire tunnel, and displays it in real time, so that the staff can grasp the roof water spraying situation of the entire tunnel and each area in real time through the monitoring device.

2. The inclined tunnel roof water protection measurement method of the inclined tunnel roof water protection measurement equipment according to claim 1 is characterized by: The support mechanism includes three upper supports, three lower supports, and upper and lower support combining blocks arranged between the upper and lower supports. The lower ends of the three upper supports and the upper ends of the three lower supports are connected through the upper and lower support combining blocks.

3. The inclined tunnel roof water protection measurement method of the inclined tunnel roof water protection measurement equipment according to claim 1 is characterized by: The hollow column is made of transparent colorless glass.

4. The inclined tunnel roof water protection measurement method of the inclined tunnel roof water protection measurement equipment according to claim 1 is characterized by: The distance between the laser emission source and the photosensitive diode and the top of the hollow column is less than the height of the hollow plastic cube.

5. The inclined tunnel roof water protection measurement method of the inclined tunnel roof water protection measurement equipment according to claim 1 is characterized by: The outer edges of the left and right sides and the lower part of the water collecting plate should be higher than the inner edge.

Citation Information

Patent Citations

  • Underground engineering water disaster treatment device

    CN214997804U